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OKI Semiconductor
FEDR27T3202F-02-04
Issue Date: Jul. 9, 2004
MR27T3202F
P2ROM
2M–Word × 16–Bit or 4M–Word × 8–Bit
FEATURES
· 2,097,152-word × 16-bit / 4,194,304-word × 8-bit electrically
switchable configuration
· 2.7 V to 3.6 V power supply
· Access time 90 ns MAX
· Operating current 20 mA MAX (5MHz)
· Standby current 10 µA MAX
· Input/Output TTL compatible
· Three-state output
PACKAGES
· MR27T3202F-xxxMA
44-pin plastic SOP (SOP44-P-600-1.27-K)
· MR27T3202F-xxxTP
44-pin plastic TSOP (TSOP II 44-P-400-0.80-K)
· MR27T3202F-xxxTN
48-pin plastic TSOP (TSOP I 48-P-1220-0.50-1K)
P2ROM ADVANCED TECHNOLOGY
P2ROM stands for Production Programmed ROM. This
exclusive Oki technology utilizes factory test equipment for
programming the customers c ode into the P2 ROM prior to fi nal
production testing. Advancements in this technology allows
production costs to be eq uivalent to M ASKROM and has many
advantages and added benefits over the other non-volatile
technologies, which include the following;
· Short lead time, since the P2ROM is programmed at the
final stage of the production process, a large P2ROM
inventory "bank system" of un-programmed packaged
products are maintained to provide an aggressive lead-time
and minimize liability as a custom product.
· No mask charge, since P2ROMs do not utilize a custom
mask for storing customer code, no mask charges apply.
· No additional programming charge, unlike Flash and
OTP that require additional programming and handling
costs, the P2ROM already has the code loaded at the
factory with minimal effect on the production throughput.
The cost is included in the unit price.
· Custom Marking is available at no additional charge.
· Pin Compatible with Mask ROM and some FLASH
products.
PIN CONFIGURATION (TOP VIEW)
1
NC
2
A18
3
A17
4
A7
5
A6
6
A5
7
A4
8
A3
9
A2
10
A1
11
A0
12
CE#
13
V
SS
14
OE#
15
D0
16
D8
17
D1
18
D9
19
D2
20
D10
21
D3
22
D11
44SOP,
44TSOP(Type-II)
1
A15
2
A14
3
A13
4
A12
5
A11
6
A10
7
A9
8
A8
9
A19
10
A20
11
NC
12
NC
13
NC
14
NC
15
NC
16
A18
17
A17
18
A7
19
A6
20
A5
21
A4
22
A3
23
A2
24
A1
48TSOP(Type-I)
44
A20
43
A19
42
A8
41
A9
40
A10
39
A11
38
A12
37
A13
36
A14
35
A15
34
A16
33
BYTE#
32
VSS
31
D15/A–1
30
D7
29
D14
28
D6
27
D13
26
D5
25
D12
24
D4
23
VCC
A16
48
BYTE#
47
VSS
46
D15/A–1
45
D7
44
D14
43
D6
42
D13
41
D5
40
D12
39
D4
38
VCC
37
D11
36
D3
35
D10
34
D2
33
D9
32
D1
31
D8
30
D0
29
OE#
28
VSS
27
CE#
26
A0
25
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FEDR27T3202F-02-04
OKI Semiconductor
BLOCK DIAGRAM
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
PIN DESCRIPTIONS
Pin name Functions
D15 / A–1 Data output / Address input
A0 to A20 Address inputs
D0 to D14 Data outputs
CE# Chip enable input
OE# Output enable input
BYTE# Word / Byte select input
VCC Power supply voltage
VSS Ground
NC No connect
MR27T3202F / P2ROM
A–1
× 8/× 16 Switch
CE# BYTE# OE#
CE OE
Memory Cell Matrix
Row Decoder
Address Buffer
Column Decoder
D0 D2 D4 D6 D8 D10 D12 D14
D1 D3 D5 D7 D9 D11 D13 D15
2M × 16-Bit or 4M × 8-Bit
Multiplexer
Output Buffer
In 8-bit output mode, these pins
are placed in a high-Z state and
pin D15 functions as the A-1
address pin.
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FEDR27T3202F-02-04
OKI Semiconductor
MR27T3202F / P2ROM
FUNCTION TABLE
Mode CE# OE# BYTE# VCC D0 to D7 D8 to D14 D15/A–1
Read (16-Bit) L L H D
Read (8-Bit) L L L D
Output disable L H
Standby H ∗
H
L
H
L
3.0 V
Hi–Z L/H
OUT
OUT
Hi–Z
Hi–Z
∗
∗
∗: Don’t Care (H or L)
ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Condition Value Unit
Operating temperature under bias Ta 0 to 70 °C
Storage temperature Tstg
Input voltage VI –0.5 to VCC+0.5 V
Output voltage VO –0.5 to VCC+0.5 V
Power supply voltage VCC
Power dissipation per package PD Ta = 25°C 1.0 W
Output short circuit current IOS — 10 mA
—
relative to VSS
–55 to 125 °C
–0.5 to 5 V
RECOMMENDED OPERATING CONDITIONS
(Ta = 0 to 70°C)
Parameter Symbol Condition Min. Typ. Max. Unit
VCC power supply voltage VCC 2.7 — 3.6 V
= 2.7 to 3.6 V
Input “H” level VIH 2.2 — VCC+0.5∗ V
Input “L” level VIL
V
CC
–0.5∗∗ — 0.6 V
Voltage is relative to VSS.
∗ : Vcc+1.5V(Max.) when pulse width of overshoot is less than 10ns.
∗∗ : -1.5V(Min.) when pulse width of undershoot is less than 10ns.
PIN CAPACITANCE
(VCC = 3.0 V, Ta = 25°C, f = 1 MHz)
Parameter Symbol Condition Min. Typ. Max. Unit
Input C
BYTE# C
Output C
— — 8
IN1
IN2
V
OUT
V
= 0 V
I
= 0 V — — 10
O
— — 120
pF
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